华南师范大学学报(自然科学版)
華南師範大學學報(自然科學版)
화남사범대학학보(자연과학판)
JOURNAL OF SOUTH CHINA NORMAL UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
3期
70-74
,共5页
刘慧玲%李国明%石光%王泽忠%刘聪%何浩鹏
劉慧玲%李國明%石光%王澤忠%劉聰%何浩鵬
류혜령%리국명%석광%왕택충%류총%하호붕
纳米 TiO2%粉体改性%复合薄膜%制备%抗菌
納米 TiO2%粉體改性%複閤薄膜%製備%抗菌
납미 TiO2%분체개성%복합박막%제비%항균
nanometer TiO2%modified powder%composite film%preparation%antibacterial
以钛酸丁酯为原料,用溶胶-凝胶法制备纳米 TiO2,利用 SEM 观察粉体表面形貌和结构.分别用硅烷偶联剂(KH550、KH570和 A171)对纳米粉体进行表面改性,利用 SEM、XRD 和 FTIR,考察改性粉体的表面结构和性质变化.同时测定改性粉体的亲油化度和在水、甲苯和石油醚中的分散情况;采用甲苯作溶剂,将改性粉体与低密度聚乙烯(LDPE)混合,经流延得到抗菌聚乙烯复合薄膜.利用 SEM 和数码相机,观察改性纳米 TiO2抗菌剂/ LDPE 复合薄膜的抗菌性能.结果表明,KH570改性粉体在甲苯中的分散性最好,当抗菌粉体的添加量为3.0%时,制得复合薄膜的抗菌性能最好,抗菌率达到99.99%,即具有最好的抗菌效果.
以鈦痠丁酯為原料,用溶膠-凝膠法製備納米 TiO2,利用 SEM 觀察粉體錶麵形貌和結構.分彆用硅烷偶聯劑(KH550、KH570和 A171)對納米粉體進行錶麵改性,利用 SEM、XRD 和 FTIR,攷察改性粉體的錶麵結構和性質變化.同時測定改性粉體的親油化度和在水、甲苯和石油醚中的分散情況;採用甲苯作溶劑,將改性粉體與低密度聚乙烯(LDPE)混閤,經流延得到抗菌聚乙烯複閤薄膜.利用 SEM 和數碼相機,觀察改性納米 TiO2抗菌劑/ LDPE 複閤薄膜的抗菌性能.結果錶明,KH570改性粉體在甲苯中的分散性最好,噹抗菌粉體的添加量為3.0%時,製得複閤薄膜的抗菌性能最好,抗菌率達到99.99%,即具有最好的抗菌效果.
이태산정지위원료,용용효-응효법제비납미 TiO2,이용 SEM 관찰분체표면형모화결구.분별용규완우련제(KH550、KH570화 A171)대납미분체진행표면개성,이용 SEM、XRD 화 FTIR,고찰개성분체적표면결구화성질변화.동시측정개성분체적친유화도화재수、갑분화석유미중적분산정황;채용갑분작용제,장개성분체여저밀도취을희(LDPE)혼합,경류연득도항균취을희복합박막.이용 SEM 화수마상궤,관찰개성납미 TiO2항균제/ LDPE 복합박막적항균성능.결과표명,KH570개성분체재갑분중적분산성최호,당항균분체적첨가량위3.0%시,제득복합박막적항균성능최호,항균솔체도99.99%,즉구유최호적항균효과.
Based on tetra-n-butyl titanate as raw material,nanometer TiO2 was prepared by the solvent gel(Sol-Gel)method. Modified powder surface morphology and structure were inspected by SEM. Nanometer powder sur-face was modified with silane coupling agent(KH550,KH570 or A171). The surface structure and qualitative change of modified powder were observed by SEM,XRD and FTIR. Besides the oil-wet change degree and disper-sing situation in water,toluene and petroleum were detected. Using toluene as solvent,the modified powder and Low Density Polyethylene(LDPE)resin were mixed and then achieved antibacterial polyethylene composite film membrane through the way of flow delay. The antibacterial performance of modified nano TiO2 antibacterial agent/LDPE compound film was measured with SEM and digital camera. The results showed that the best dispersion in toluene was KH570 modified powder. When 3% antibacterial powder was added,the antibacterial properties of composite film were the best and its antibacterial rate reached 99. 9% .